Conditioning apparatus for steam heating systems to remove scale, corrosion, etc.



c T E N O I 5 m6 R4. 0 l 1 E 5 A n March 29, 1949. J MlLLER CONDITIONINGAPPARATUS FOR STEAM HEATING SYSTEMS TO REMOVE s Filed JaFRAISIXEJITJINACIJELEB BY? ATTORNEYS Patented Mar. 29, 1949 CONDITIONINGAPPARATUS FOR STEAM HEATING SYSTEMS TO REMOVE SCALE,

CORROSION, ETC.

Frank J. Miller, South Milwaukee, Wis.; Lillian B. Miller, cxecutrix ofsaid Frank J. Miller, deceased, assignor to Pressure-Jet Systems, Inc.,Milwaukee, Wis., a corporation of Wisconsin Application January 31,1946, Serial No. 644,624

1 Claim. 1

My invention pertains to an apparatus for treating steam heatingsystems, more particularly to a unit for introducing chemicalcorrective; into all parts of the steam line or heating system forremoving scale, corrosion, rust and oil therefrom.

A specific object of my invention is to provide a motor driven pump incommunication with a T or chamber which is connected to the pump and asteam service pipe whereby chemical is delivered to the chamber or T indrops, which are converted into steam, through an electric unit wherebythe converted chemical is delivered to the service pipe.

The invention has primarily for its object to simplify and increase theefficiency of the apparatus of the foregoing character.

With the above and other objects in view, which will appear as thedescription proceeds, the invention resides in the novel construction,combination and arrangement of parts, substantially as hereinafterdescribed, and more particularly defined by the appended claims, itbeing understood that such changes in the precise embodiment of theherein disclosed invention may be made as come within the scope of theclaim.

The drawing illuitrates a diagrammatic view with parts broken away andin section to more clearly illustrate my invention.

Referring by characters to the drawings, l indicates a reciprocativepump connected by a check valve controlled pipe 2 to a fluid chemicaltank 3, the said fluid being of an alkaline nature to resist scale, orthe like.

A pipe 4 having a restricted check valve 5 is connected to the pump andthe upper portion of a T or chamber 6.

One leg 6' of the T is connected to a steam supply pipe I.

The lower end of the T or chamber in this exemplification of myinvention has fitted therein a standard glow plug 8, it being understoodthat any suitable electric heating unit may be substituted for the glowplug.

In utilizing the standard glow plug, now on the market, it is understoodthat the cost f production with reference to the installation, isproduced.

An electric motor 9 is connected by a belt 9' to a suitable pulleycarried by the motor I whereby the same is driven. The motor is suppliedby electric line wires Ill, I0 connected to the motor and said line isprovided with a manually controlled make and break switch ll. The glowplug or electric unit is connected by conductor wires I2, l2 to themotor circuit wires I0, Ill, as indicated, whereby when the motor isenergized, sufficient current is supplied to the glow plug or electricunit 8 to develop sufiicient heat therein for converting drops of thechemical fluid into steam within the chamber. Thus, it will be seen thatthe chemical impregnated steam will be maintained at a high pressurewhereby it will, through the chamber connections, enter and co-minglewith the steam supply in the pipe '1.

Briefly, heretofore, due to steam back pressure in the supply pipe I ithas been difficult to inject directly therein a chemical solution,whereby the said solution will thoroughly impregnate the steam supply toprevent scale, corrosion, or the like, in said pipe. By providing anoutside chamber which communicates directly with the steam supply pipeand also the check valve control chemical solution pipe, it is apparentthat a small quantity of the high pressure steam in pipe I will fill thechamber and also the chemical supply pipe 4. Hence, the steam pressurein said pipe and chamber will correspond to the pressure in pipe l, anddue to the fact that the heating unit 8 is in communication with theauxiliary cham her, when the drop by drop of the chemical solution isforceably discharged into the chamber, it will be converted into steampressure of higher temperature than the main supply, whereby itco-mingles uniformly with said main supply.

It is understood that while the diagrammatic view illustrates thegeneric principles involved, changes in the structural features may bemade without departing from the scope of the claim, when said claim isinterpreted by those skilled in the art.

I claim:

A conditioning apparatus for steam heating units, comprising a chemicalreservoir, a reciprocative pump in pipe connection with the reservoir, asteam supply pipe, a steam chamber in communication with the steamsupply pipe, a check valve controlled chemical solution feed pipecommunicating with the upper portion of the chamber, pump and steamsupply pipe,

3 4 whereby the chemical solution is converted into steam and mixedtherewith, an electric heating REFERENCES CITED element extending intothe bottom of said cham- The following references are of record in theher, an electric motor in driving connection with fil Of t p t the pump,an electric switch controlled supply 5 UNITED STATES PATENTS wire inc1rcu1t with the motor and supply wire connections between the motorcircuit and heat- Number Name ate ing element, whereby chemical fluidentering the 1,031,463 z Dec. 16, 1913 chamber wi11 be converted intosteam. 1,553,907 l s Oct. 27, 1925 1 2,170,551 Cummings, Jr Aug. 22,1939 FRANK J. MILLER. 2,217,729 Chancey Oct. 15, 1940

